HP Brocade 4Gb SAN Switch for HP BladeSystem p-Class - Manual (Page 246)

246 Glossary
configuration
1. A set of parameters that can be modified to fine-tune the operation of a switch. Use the
configshow
command
to view the current configuration of your switch.
2. In HP Zoning, a zoning element that contains a set of zones. The configuration is the highest-level zoning element
and is used to enable or disable a set of zones on the fabric. See also zone configuration .
COS
Class of service.
CP
Control processor.
credit
As applied to Fibre Channel technology, the number of receive buffers available to transmit frames between ports.
See also BB_Credit .
D_ID
Destination identifier. A three-byte field in the frame header that indicates the address identifier of the N_Port to
which the frame is headed.
defined zone configuration
The set of all zone objects defined in the fabric. Can include multiple zone configurations. See also zone
configuration .
digital certificate
An electronic document issued by a certificate authority (CA) to an entity, containing the public key and identity of
the entity. Entities in a secure fabric are authenticated based on these certificates. See also authentication , CA ,
public key .
disparity
The proportion of 1s and 0s in an encoded character. Neutral disparity means an equal number of each; positive
disparity means a majority of 1s; negative disparity means a majority of 0s.
DLS
Dynamic load-sharing. Dynamic distribution of traffic over available paths. Allows for recomputing of routes when
an Fx_Port or E_Port changes status.
domain controller
A domain controller (or embedded port) communicates with and gets updates from other switches' embedded ports.
The well-known address is
fffcdd
, where
dd
is the domain number).
domain ID
A unique identifier for all switches in a fabric, used in routing frames. Usually assigned by the principal switch but
can be assigned manually. The domain ID for an HP StorageWorks switch can be any integer from 1 through 239.
E_D_TOV
Error-detect time-out value. The minimum time a target waits for a sequence to complete before initiating recovery.
Can also be defined as the maximum time allowed for a round-trip transmission before an error is declared. See
also R_A_TOV , RR_TOV .